diff options
Diffstat (limited to 'drivers/hid/hid-input.c')
| -rw-r--r-- | drivers/hid/hid-input.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index c526a3ccbe5b..7480799e535c 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1042,9 +1042,14 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct /* * Ignore out-of-range values as per HID specification, - * section 5.10 and 6.2.25 + * section 5.10 and 6.2.25. + * + * The logical_minimum < logical_maximum check is done so that we + * don't unintentionally discard values sent by devices which + * don't specify logical min and max. */ if ((field->flags & HID_MAIN_ITEM_VARIABLE) && + (field->logical_minimum < field->logical_maximum) && (value < field->logical_minimum || value > field->logical_maximum)) { dbg_hid("Ignoring out-of-range value %x\n", value); |